Kebab dish finished with last bit of coriander (5)
I believe the answer is:
doner
'kebab dish' is the definition.
(as in a doner kebab)
'finished with last bit of coriander' is the wordplay.
'finished' becomes 'done' (both can mean completed).
'with' says to put letters next to each other.
'last bit of' says to take the final letters.
The final letter of 'coriander' is 'r'.
'done'+'r'='DONER'
(Other definitions for doner that I've seen before include "fare from Turkey" , "kebab" .)